Display panel and display apparatus

Abstract

Provided are a display panel and a display apparatus. In an embodiment, the display panel includes a substrate and a display medium layer over the substrate. In an embodiment, the display medium layer includes: a microstructure; a plurality of charged particles located in the microstructure; a first electrode at least partially located in the microstructure; and a second electrode at least partially located in the microstructure. In an embodiment, the microstructure has a sidewall not parallel to the substrate and a bottom surface. In an embodiment, the first electrode includes a first side portion located on the sidewall and a first extension portion. In an embodiment, the first extension portion is connected to the first side portion and located on part of the bottom surface.

What is claimed is: 
     
         1 . A display panel, comprising:
 a substrate; and   a display medium layer located over the substrate, wherein the display medium layer comprises:
 a plurality of charged particles; 
 a plurality of microstructures, wherein a microstructure of the plurality of microstructures comprises a sidewall not parallel to the substrate and a bottom surface adjacent to the substrate, and is disposed therein with some of the charged particles; 
 a plurality of first electrodes; and 
 a plurality of second electrodes, 
 wherein a first electrode of the plurality of first electrodes and a second electrode of the plurality of second electrodes are at least partially located in the microstructure, the first electrode comprises a first side portion and a first extension portion, the first side portion is located on the sidewall of the microstructure, and the first extension portion is connected to the first side portion and located on part of the bottom surface of the microstructure. 
   
     
     
         2 . The display panel according to  claim 1 , wherein the sidewall comprises a first sidewall and a second sidewall that are opposite to each other along a first direction, and the first direction is parallel to a plane of the substrate,
 the first side portion is located on the first sidewall, and   the second electrode comprises a first sub-electrode, and the first sub-electrode comprises a second side portion located on the second sidewall.   
     
     
         3 . The display panel according to  claim 2 , wherein the first sub-electrode further comprises a second extension portion connected to the second side portion and located on part of the bottom surface. 
     
     
         4 . The display panel according to  claim 2  further comprising: a plurality of sub-pixels, wherein the plurality of sub-pixels comprises the plurality of microstructures,
 wherein a working mode of the sub-pixel comprises a first mode, and 
 wherein, in the first mode, a voltage of the first electrode is not equal to a voltage of the first sub-electrode, and the charged particle moves to the first side portion or the second side portion. 
 
     
     
         5 . The display panel according to  claim 2 , wherein the second electrode further comprises a second sub-electrode that is located on part of the bottom surface of the corresponding microstructure and runs through the corresponding microstructure along a second direction, and the second direction intersects with the first direction and is parallel to the plane of the substrate. 
     
     
         6 . The display panel according to  claim 5 , further comprising: a plurality of sub-pixels, wherein the plurality of sub-pixels comprises the plurality of microstructures,
 wherein a working mode of the sub-pixel comprises a first mode, and   wherein, in the first mode, a voltage of the first electrode is equal to a voltage of the first sub-electrode and not equal to a voltage of the second sub-electrode, some of the charged particles in the microstructure move to the first side portion, and some of the charged particles in the microstructure move to the second side portion.   
     
     
         7 . The display panel according to  claim 5 , further comprising a counter substrate located at a side of the display medium layer away from the substrate, wherein the counter substrate comprises third electrodes, and
 wherein, in a direction perpendicular to the plane of the substrate, the third electrode at least overlaps with the second sub-electrode and the first extension portion.   
     
     
         8 . The display panel according to  claim 7 , further comprising a plurality of sub-pixels, wherein the plurality of sub-pixels comprises the plurality of microstructures,
 wherein a working mode of the sub-pixel comprises a first mode, and   wherein, in the first mode, a voltage of the second sub-electrode is equal to a voltage of the third electrode and a voltage of the first electrode is not equal to a voltage of the first sub-electrode, or a voltage of the second sub-electrode is not equal to a voltage of the third electrode and a voltage of the first electrode is equal to a voltage of the first sub-electrode, and some of the charged particles in the microstructure move to the first side portion, and some of the charged particles in the microstructure move to the second side portion.   
     
     
         9 . The display panel according to  claim 8 , wherein the plurality of charged particles comprise a plurality of first particles and a plurality of second particles, and the plurality of first particles and the plurality of second particles have opposite electrical polarities, and
 wherein, in the first mode, some of the first particles and some of the second particles move to the first side portion, and some of the first particles and some of the second particles move to the second side portion.   
     
     
         10 . The display panel according to  claim 8 , wherein the plurality of charged particles comprise a plurality of third particles and a plurality of fourth particles, and the plurality of third particles and the plurality of fourth particles comprise different colors,
 wherein the working mode of the sub-pixel further comprises a second mode, and   wherein, in the second mode, the voltage of the first electrode, the voltage of the first sub-electrode, and the voltage of the second sub-electrode are equal, but are not equal to the voltage of the third electrode, and the third particles are located at a side of the fourth particles adjacent to the third electrode, or located at a side of the fourth particles away from the third electrode.   
     
     
         11 . The display panel according to  claim 7 , further comprising a plurality of sub-pixels, wherein the plurality of sub-pixels comprises the plurality of microstructures and the third electrodes,
 wherein the third electrodes of the sub-pixels are electrically connected.   
     
     
         12 . The display panel according to  claim 7 , wherein the counter substrate comprises a plurality of color filter units, and at least one of the plurality of color filter units corresponds to the plurality of microstructures, and wherein in the direction perpendicular to the plane of the substrate, the at least one color filter unit overlaps with at least part of the corresponding microstructure. 
     
     
         13 . The display panel according to  claim 12 , wherein the microstructure is divided into a first region and a second region along the first direction, one of the first electrode and the first sub-electrode corresponding to the microstructure is located in the first region, and the other one of the first electrode and the first sub-electrode corresponding to the microstructure is located in the second region, and the second sub-electrode comprises a part located in the first region and another part located in the second region, and
 wherein, in the direction perpendicular to the plane of the substrate, the color filter unit overlaps with the first region.   
     
     
         14 . The display panel according to  claim 13 , further comprising a plurality of sub-pixels, and the plurality of sub-pixels comprising the plurality of microstructures and the plurality of color filter units,
 wherein a working mode of the sub-pixel comprises a first mode, and   wherein, in the first mode, a voltage of the first electrode is equal to a voltage of the first sub-electrode, and not equal to a voltage of the third electrode, a voltage of the second sub-electrode is equal to the voltage of the third electrode, some of the charged particles in the microstructure move to the first side portion, and some of the charged particles in the microstructure move to the second side portion.   
     
     
         15 . The display panel according to  claim 13 , further comprising a plurality of sub-pixels, wherein the plurality of sub-pixels comprises the plurality of microstructures and the plurality of color filter units,
 wherein the plurality of charged particles comprise a plurality of black particles and a plurality of white particles comprising opposite electrical polarities of the plurality of black particles,   wherein the first electrode is located in the first region, and the first sub-electrode is located in the second region,   wherein a working mode of the sub-pixel comprises a third mode, and   wherein, in the third mode, a voltage of the first sub-electrode is equal to a voltage of the second sub-electrode, and not equal to a voltage of the third electrode, a voltage of the first electrode is neither equal to the voltage of the second sub-electrode nor equal to the voltage of the third electrode, the plurality of black particles and the plurality of white particles in the first region are all located on one side of the first side portion, and the plurality of black particles in the second region are located on one side of the plurality of white particles in the second region adjacent to the third electrode.   
     
     
         16 . The display panel according to  claim 13 , further comprising a plurality of sub-pixels, and the plurality of sub-pixels comprising the plurality of microstructures and the plurality of color filter units,
 wherein the plurality of charged particles comprise a plurality of black particles and a plurality of white particles having opposite electrical polarities to the plurality of black particles,   wherein a working mode of the sub-pixel comprises a fourth mode, and   wherein, in the fourth mode, a voltage of the first electrode, a voltage of the third electrode, and a voltage of the first sub-electrode successively increase or decrease, the voltage of the third electrode is equal to a voltage of the second sub-electrode, the plurality of white particles in the first region are located on one side of the plurality of black particles in the first region adjacent to the third electrode, and the plurality of black particles in the second region are located on one side of the plurality of white particles in the second region adjacent to the third electrode.   
     
     
         17 . The display panel according to  claim 13 , further comprising a plurality of sub-pixels, and the plurality of sub-pixels comprising the plurality of microstructures and the plurality of color filter units,
 wherein the plurality of charged particles comprise a plurality of black particles and a plurality of white particles having opposite electrical polarities,   wherein a working mode of the sub-pixel comprises a fifth mode, and   wherein, in the fifth mode, a voltage of the first electrode, a voltage of the first sub-electrode, and a voltage of the second sub-electrode are equal, but are not equal to a voltage of the third electrode, and the plurality of black particles are located on one side of the plurality of white particles adjacent to the third electrode, or the plurality of black particles are located on one side of the plurality of white particles away from the third electrode.   
     
     
         18 . The display panel according to  claim 1 , wherein the second electrode comprises a third sub-electrode located on part of the bottom surface and overlapping a central region of the bottom surface, and
 wherein the sidewall of the microstructure is circular and surrounds the bottom surface, the first side portion is located on the circular sidewall and is circular, and the first extension portion is connected to the circular first side portion.   
     
     
         19 . The display panel according to  claim 18 , further comprising a plurality of sub-pixels, and the plurality of sub-pixels comprising the plurality of microstructures,
 wherein a working mode of the sub-pixel comprises a first mode, and   wherein, in the first mode, a voltage of the first electrode is not equal to a voltage of the third sub-electrode, and the charged particles in the microstructure move to the circular first side portion.   
     
     
         20 . The display panel according to  claim 18 , further comprising a counter substrate located at a side of the display medium layer away from the substrate, and the counter substrate comprising third electrodes,
 wherein in a direction perpendicular to a plane of the substrate, the third electrode at least overlaps with the third sub-electrode and the first extension portion.   
     
     
         21 . The display panel according to  claim 20 , further comprising a plurality of sub-pixels, and each of the plurality of sub-pixels comprising one of the plurality of microstructures,
 wherein a working mode of the sub-pixel comprises a first mode, and   wherein in the first mode, a voltage of the third electrode is equal to a voltage of the third sub-electrode, and not equal to a voltage of the first electrode, and the charged particles in the microstructure move to the circular first side portion.   
     
     
         22 . The display panel according to  claim 20 , further comprising a plurality of sub-pixels, and the plurality of sub-pixels comprising the plurality of microstructures,
 wherein the plurality of charged particles comprise a plurality of third particles and a plurality of fourth particles, wherein the plurality of third particles and the plurality of fourth particles have different colors,   wherein a working mode of the sub-pixel comprises a second mode, and   wherein, in the second mode, a voltage of the third sub-electrode is equal to a voltage of the first electrode, and not equal to a voltage of the third electrode, and the plurality of third particles are located at a side of the plurality of fourth particles adjacent to the third electrode, or located at a side of the plurality of fourth particles away from the third electrode.   
     
     
         23 . A display apparatus, comprising:
 a display panel, wherein the display panel comprises:
 a substrate; and 
 a sub-pixel, and the sub-pixel comprises:
 a microstructure comprising a sidewall not parallel to the substrate and a bottom surface; 
 a plurality of charged particles located in the microstructure; 
 a first electrode at least partially located in the microstructure; and 
 a second electrode at least partially located in the microstructure, 
 
   wherein the first electrode comprises a first side portion and a first extension portion, the first side portion is located on the sidewall of the microstructure, and the first extension portion is connected to the first side portion and located on part of the bottom surface of the microstructure.